Oscillating tool

ABSTRACT

A clamp arrangement for securing an accessory to an oscillating power tool can include a clamp assembly including a first clamp member that moves relative to the accessory between a closed position wherein the clamp assembly retains the accessory and an open position wherein the first clamp is offset from the accessory permitting removal of the first accessory from the clamp assembly. The clamp assembly can further comprise a second clamp member having a first portion that opposes the first clamp member and cooperates with the first clamp member to clamp the accessory between the first and second clamp members. An attachment plate can carry the clamp assembly. The attachment plate can have a first mating detail formed thereon that is configured to selectively and removably mate with a complementary second mating detail on the power tool in an assembled position.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application is a continuation of U.S. patent application Ser. No.13/826,374 filed Mar. 14, 2013, which is a continuation-in-part of U.S.patent application Ser. No. 13/362,637 filed on Jan. 31, 2012, which isa continuation-in-part of U.S. patent application Ser. No. 12/942,098filed on Nov. 9, 2010, which claims the benefit and priority of U.S.Provisional Application No. 61/329,480, filed Apr. 29, 2010. Thisapplication also claims priority to U.S. Provisional Application Nos.61/622,894 filed on Apr. 11, 2012 and 61/664,454 filed on Jun. 26, 2012.The entire disclosures of the above applications are incorporated hereinby reference.

FIELD

The present disclosure relates to power hand tools and more specificallyto a clamp arrangement for releasably securing an accessory to anoscillating power hand tool.

BACKGROUND

This section provides background information related to the presentdisclosure which is not necessarily prior art.

Power hand tools are provided in many examples for performing a widerange of tasks. For example, some power hand tools can include an outputmember that is driven by a motor and that couples with an accessory toperform a working operation onto a work piece. For example, some handtools can provide various configurations for attaching cuttingaccessories, grinding accessories, sanding accessories and the like.Some power hand tools are configured as oscillating tools that areoperable to transmit an oscillating motion onto the accessory.

During the course of performing a working operation, a user may want toexchange one accessory for another accessory. For example, a user maywant to exchange one grinding accessory with another grinding accessoryor one sanding platen with another sanding platen. Alternatively, a usermay wish to replace a cutting accessory with another cutting accessory.It is also contemplated that a user may want to replace a givenaccessory dedicated to one task (such as sanding) with another accessorydedicated toward another task (such as cutting for example). In anyevent, many power hand tools require the use of a secondary tool to swapout accessories. For example, many power hand tools require the use of ahand screw driver that can be used to retract a fastener that may lockthe accessory to the output member of the power hand tool. In otherexamples, a wrench or other hand tool may be required to remove orunlock a given accessory from the power hand tool and subsequently lockanother accessory back to the power hand tool.

SUMMARY

This section provides a general summary of the disclosure, and is not acomprehensive disclosure of its full scope or all of its features.

A clamp arrangement for securing an accessory to an oscillating powertool can include a clamp assembly including a first clamp member thatmoves relative to the accessory. The first clamp member can move betweena closed position wherein the clamp assembly retains the accessory andan open position wherein the first clamp member is offset from theaccessory permitting removal of the first accessory from the clampassembly while the first clamp member remains coupled to the clampassembly. The clamp assembly can further comprise a second clamp memberhaving a first portion that opposes the first clamp member andcooperates with the first clamp member to clamp the accessory betweenthe first and second clamp members. An attachment plate can carry theclamp assembly. The attachment plate can have a first mating detailformed thereon that is configured to selectively and removably mate witha complementary second mating detail on the power tool in an assembledposition.

According to additional features, the clamp arrangement can furtherinclude a fastener that is configured to selectively and removablyextend through a portion of the attachment plate and rotationally fixthe attachment plate to the output member of the power tool. Thefastener can comprise a threaded fastener that threadably mates with acomplementary threaded bore defined in the output member. The clampassembly and the attachment plate can be rotationally fixed with theoutput member in the assembled position.

The first mating detail can collectively comprise a first matinggeometry and a second distinct mating geometry that are configured toselectively and alternatively mate with the complementary second matingdetail. The second mating detail can comprise a first tool geometry on afirst oscillating tool and a second tool geometry, distinct from thefirst tool geometry on a second oscillating tool. The first matinggeometry can be configured to mate with the first tool geometry of thefirst oscillating tool in a first configuration. The second matinggeometry can be configured to mate with the second tool geometry of thesecond oscillating tool in a second configuration. The first matinggeometry can comprise a keyed recess formed into the attachment plate.The second mating geometry can comprise a plurality of recesses formedaround the keyed recess. According to one configuration, the keyedrecess comprises a twelve point star. The plurality of recesses cancomprise a plurality of oval recesses arranged around the keyed recess.

According to one configuration, the clamp arrangement can comprise alever having a user engagement portion and a pivot portion including apivot axle. The lever can be pivotally coupled relative to theattachment plate about the pivot axle between a first position, whereinthe clamp assembly is in the closed position and a second positionwherein movement of the user engagement portion of the lever causes theclamp assembly to be moved to the open position. In otherconfigurations, a first clamp member body can have a user engagementportion including a circumferential flange extending therefrom. The userengagement portion can be movably coupled relative to the tool bodyalong an axis of the fastener between a first position, wherein theclamp assembly is in the closed position and a second position whereinmovement of the user engagement portion causes the clamp assembly to bemoved to the open position.

Further areas of applicability will become apparent from the descriptionprovided herein. The description and specific examples in this summaryare intended for purposes of illustration only and are not intended tolimit the scope of the present disclosure.

DRAWINGS

The drawings described herein are for illustrative purposes only ofselected embodiments and not all possible implementations, and are notintended to limit the scope of the present disclosure.

FIG. 1 is a perspective view of a clamp arrangement constructed inaccordance to one example of the present teachings and shown operativelyassociated with an exemplary power hand tool for releasably securing afirst or a second accessory;

FIG. 2 is a perspective view of a clamp assembly of the clamparrangement shown in FIG. 1 and shown with the clamp assembly in theclosed position retaining the first accessory;

FIG. 3 is an exploded perspective view of the clamp assembly of FIG. 2;

FIG. 4 is a sectional view of the clamp assembly of FIG. 2 and shownwith the clamp assembly in the closed position and a lever of the clampassembly in a first position;

FIG. 5 is a cross-sectional view of the clamp assembly of FIG. 4 andshown with the clamp assembly in the open position resulting from thelever being rotated about a pivot axle into a second position whereinthe first accessory is subsequently lifted out of engagement with thefirst clamp member;

FIG. 6 is a cross-sectional view of the clamp assembly of FIG. 5 shownwith the clamp assembly in the open position and the lever in the secondposition and illustrating the first accessory being removed from theclamp assembly;

FIGS. 7-9 are perspective views of the clamp assembly that generallycorrespond to the sequence illustrated in FIGS. 4-6 for removing thefirst accessory from the clamp assembly;

FIGS. 10-12 are perspective views of the clamp assembly that illustratean exemplary sequence of orienting the first accessory in a differentrotational position relative to the clamp assembly;

FIGS. 13-15 are cross-sectional views of the clamp assembly takenthrough a spindle of the power hand tool and shown with the firstaccessory rotated at different positions around an axis of the spindle;

FIG. 16 is a perspective view of the clamp arrangement of the presentteachings and shown with the clamp assembly secured to the secondaccessory;

FIG. 17 is an exploded perspective view of the clamp assembly and secondaccessory illustrated in FIG. 16;

FIG. 18 is a sectional view of the clamp assembly of FIG. 16 and shownwith the clamp assembly in the open position resulting from movement ofthe lever around the pivot axle to the second position for receipt of amounting collar of the second accessory;

FIG. 19 is a cross-sectional view of the clamp assembly of FIG. 18 andshown with the mounting collar of the second accessory positionedgenerally between first and second clamp members of the clamp assemblywhile the lever is maintained in the second position;

FIG. 20 is a cross-sectional view of the clamp assembly of FIG. 19 andillustrating the clamp assembly in the closed position as a result ofthe lever being released and returned to the first position causing thefirst and second clamp members to clamp the mounting collar;

FIG. 21 is a perspective view of an exemplary third accessory;

FIG. 22 is a partial cross-section of the clamp assembly and shown withthe third accessory secured to an auxiliary mounting surface of thesecond clamp member;

FIGS. 23-25 illustrate an exemplary assembly sequence of a fourthaccessory having a throat that defines a relatively narrower opening ascompared to the first accessory wherein the throat is slidably directedthrough channels provided on the spindle;

FIG. 26 is an exploded partial plan view of the fourth accessory andshown adjacent to the second clamp member and illustrated with thespindle in cross-section taken through the channels;

FIG. 27 is a partial plan view of a fifth accessory having circularmounting passages according to additional features;

FIG. 28 is a partial plan view of the fifth accessory shown in FIG. 27and illustrated interfacing with the second clamp member;

FIG. 29 is a side view of a clamp arrangement constructed in accordanceto another example of the present teachings and shown operativelyassociated with an exemplary hand tool;

FIG. 30 is a sectional view of the clamp assembly of FIG. 29 and shownwith the clamp assembly in a closed position and a lever of the clampassembly in a first position;

FIG. 31 is a perspective view of the second clamp member of the clampassembly of FIG. 30;

FIG. 32 is a plan view of an accessory constructed in accordance to oneexample of the present teachings;

FIG. 33 is a side view of the accessory of FIG. 32 shown placed on thesecond clamp member and shown with the first clamp member removed forillustrative purposes;

FIG. 34 is a side view of the clamp assembly shown during removal of theaccessory where the lever is moved from the first position (phantom) toa second position (solid line) and the first clamp member is raised awayfrom engagement with the accessory;

FIG. 35 is an exploded perspective view of a clamp assembly constructedin accordance to another example of the present teachings and shown witha fastener for selectively and alternatively coupling the clamp assemblyto one of a first power tool or a second power tool;

FIG. 36 is a sectional view of the clamp assembly of FIG. 35 showncoupled to a first tool mating detail of the first power tool;

FIG. 37 is a cross-sectional view of the clamp assembly of FIG. 36 andshown with the clamp assembly in the open position resulting from thelever being rotated about a pivot axle into a second position wherein anaccessory may be inserted for clamping;

FIG. 38 is a cross-sectional view of the clamp assembly of FIG. 37 andshown with the clamp assembly in a closed position wherein the accessoryis clamped between the first and second clamp members;

FIG. 39 is a front perspective view of a clamp assembly constructed inaccordance to another example of the present teachings;

FIG. 40 is an exploded perspective view of the clamp assembly of FIG. 39and shown operatively associated with the first power tool and afastener;

FIG. 41 is a cross-sectional view of the clamp assembly of FIG. 40 shownin an installed position wherein the fastener threadably mates with anoutput member of the first power tool;

FIG. 42 is a cross-sectional view of the clamp assembly of FIG. 41 andshown with the clamp assembly in the open position for receipt of anaccessory;

FIG. 43 is a cross-sectional view of the clamp assembly of FIG. 42 andshown with the clamp assembly in the closed position and clamping theaccessory between a first and second clamp member;

FIG. 44 is an exploded perspective view of a clamp assembly constructedin accordance to another example of the present teachings;

FIG. 45 is an exploded cross-sectional view of the clamp assembly ofFIG. 44;

FIG. 46 is a cross-sectional view of the clamp assembly of FIG. 45 andshown with an accessory coupled to an outboard face of a clamp memberwith an adapter plate, a clamp plate, and a fastener;

FIG. 47 is a front perspective view of a clamp assembly constructed inaccordance to another example of the present teachings;

FIG. 48 is an exploded perspective view of the clamp assembly of FIG.47;

FIG. 49 is a cross-sectional view of the clamp assembly of FIG. 47 andshown with the clamp assembly in the open position for receipt of anaccessory;

FIG. 50 is a cross-sectional view of the clamp assembly of FIG. 49 andshown with the clamp assembly in the closed position and clamping theaccessory between the first and second clamp member;

FIG. 51 is a front perspective view of a clamp assembly constructed inaccordance to yet another example of the present teachings;

FIG. 52 is an exploded perspective view of the clamp assembly of FIG.51;

FIG. 53 is a cross-sectional view of the clamp assembly of FIG. 51 andshown with the clamp assembly in the open position for receipt of anaccessory;

FIG. 54 is a cross-sectional view of the clamp assembly of FIG. 53 andshown with the clamp assembly in the closed position for clamping theaccessory between the first and second clamp member;

FIG. 55 is a cross-sectional view of clamp assembly constructed inaccordance to other examples of the present teachings and shown in anopen position for receipt of an accessory in the form of a sandingplaten;

FIG. 56 is a cross-sectional view of the clamp assembly of FIG. 55 andshown with the clamp assembly in the closed position and clamping theaccessory between the first and second clamp member;

FIG. 57 is a front perspective view of a clamp assembly constructed inaccordance to another example of the present teachings and with theclamp assembly shown in an open position;

FIG. 58 is an exploded perspective view of the clamp assembly of FIG.57;

FIG. 59 is a front perspective view of the clamp assembly of FIG. 57 andshown in a closed position;

FIG. 60 is a front perspective view of a clamp assembly having analternate attachment plate and shown in the closed position;

FIG. 61 is a front perspective view of a cam body of the clamp assemblyof FIG. 57;

FIG. 62 is a perspective view of a first clamp member body of the clampassembly of FIG. 57;

FIG. 63 is a sectional view of the cam body of FIG. 61;

FIG. 64 is a sectional view of the first clamp member body of FIG. 62;

FIG. 65 is another sectional view of the clamp member body of FIG. 62;

FIG. 66 is a plan view of the cam body of FIG. 61;

FIG. 67 is a plan view of the first clamp member body of FIG. 62;

FIG. 68 is a sectional view of the clamp assembly of FIG. 57 and shownin a closed position;

FIG. 69 is a sectional view of the clamp assembly of FIG. 57 and shownin an intermediate position;

FIG. 70 is a sectional view of the clamp assembly of FIG. 57 and shownin an open position;

FIG. 71 is a top perspective view of a clamp arrangement constructed inaccordance to additional features of the present disclosure;

FIG. 72 is a bottom perspective view of the clamp arrangement of FIG.71;

FIG. 73 is a top perspective view of a clamp arrangement constructed inaccordance to other features of the present disclosure;

FIG. 74 is a bottom perspective view of the clamp arrangement of FIG.73;

FIG. 75 is a perspective view of an alternate attachment plate accordingto the present disclosure;

FIG. 76 is a perspective view of an alternate attachment plate accordingto the present disclosure;

FIG. 77 is a perspective view of an alternate attachment plate accordingto the present disclosure; and

FIG. 78 is a front perspective view of an alternative clamp assembly.

Corresponding reference numerals indicate corresponding parts throughoutthe several views of the drawings.

DETAILED DESCRIPTION

Example embodiments will now be described more fully with reference tothe accompanying drawings.

With initial reference to FIG. 1, a clamp arrangement constructed inaccordance to one example of the present disclosure is shown andgenerally identified at reference numeral 10. The clamp arrangement 10is shown operatively associated with a power tool 12 for selectively andalternatively retaining various accessories, such as a first accessory14 a or a second accessory 14 b. The exemplary power tool can generallyinclude a tool body 18 including a housing 20 that generally contains amotor 22 that drives an output member 24. The output member 24 can becoupled to a spindle 26. The exemplary power tool 12 is configured forproviding an oscillating motion onto the spindle 26. It will beappreciated that while the clamp arrangement 10 is disclosed herein aspart of an oscillating power hand tool, the clamp arrangement 10 may bealso configured for use with other power tools that releasably secure anaccessory.

The clamp arrangement 10 can further include a clamp assembly 30 thatoperatively cooperates with an actuator such as a lever 32. The clampassembly 30 can generally include a first clamp member 36 and a secondclamp member 38. The lever 32 can include a lever arm 40 that includes auser engagement portion 42 and a block 44. The lever 32 can furtherinclude a pivot portion 46 having a pivot axle 48.

With continued reference to FIG. 1, the second accessory 14 b will bebriefly described. The second accessory 14 b can generally include asanding platen 50 having a platen body 52 and a mounting collar 54. Inthe example shown, the mounting collar 54 can be coupled to the body 52by way of a series of fasteners 56. The body 52 can be configured tosupport an abrasive sheet, such as sand paper and the like as is knownin the art. The mounting collar 54 can generally include an upper plateportion 60 having a plurality of mounting features 62. In the exampleshown, the mounting features 62 are generally in the form of passagesformed through the mounting collar 54. The mounting collar 54 cangenerally include an open-ended aperture or throat 66 configured toaccept the spindle 26 in an assembled position as will be describedherein.

With additional reference now to FIGS. 2 and 3, the clamp assembly 30will be described in greater detail. The second clamp member 38 caninclude a second clamp body 70 generally in the form of a ring having acentral opening 72. The second clamp body 70 can generally comprise asecond clamping surface 74 having a plurality of mounting features 76formed thereon. In the example shown, the plurality of mounting features76 are in the form of male protrusions 78. In the particular exampleshown, eight protrusions each having a tapered shape or form areprovided. However, other configurations are contemplated. The secondclamp body 70 can additionally include an auxiliary attachment surface80 having a plurality of auxiliary mounting features 82 (FIG. 2). Again,the plurality of auxiliary mounting features 82 are shown in the form ofmale protrusions and may include a similar eight protrusionconfiguration as provided on the second clamping surface 74. Theauxiliary mounting features 82 can each have a diameter of 2.4 mm. Otherconfigurations are contemplated.

With reference now to FIGS. 3 and 4, the first clamp member 36 cangenerally include a first clamp member body 84 having an annular flange86. The first clamp member body 84 can include a first clamping surface87 having a plurality of mounting features 88 (FIG. 4). In the exampleshown, the plurality of mounting features 88 are in the form of recessesthat cooperatively receive the corresponding plurality of mountingfeatures 76 of the second clamp member 38. The mounting features 88 canhave any configuration, such as blind bores, or circular grooves beingsuitable to accept the male protrusions of the mounting features 76. Theannular flange 86 can generally extend radially on an end of an outerhub 90 of the first clamp member body 84. The annular flange 86 can havea lever opposing surface 91. The first clamp member body 84 can furtherinclude an inner hub 92 that defines a first clamp member opening 94.The first clamp member opening 94 can be configured to receive thespindle 26. An annular channel 96 can be formed between the outer hub 90and the inner hub 92. The annular channel 96 can have a terminal surface98.

The lever 32 can generally include a lever body 100 having the userengagement portion 42 formed generally on a first end and the pivotportion 46 formed on an opposite end. According to one example, thepivot portion 46 can generally include a pair of lobes 102 that eachdefine an axle passage 104. The lever body 100 can further include apocket 108 having a flange opposing surface 110 for generally receivingtwo steel balls and the annular flange 86 of the first clamp member 36.The block 44 can generally include a pair of transverse posts 116 and ablind bore 118. The axle passages 104 provided in the lobes 102 can beconfigured to receive the pivot axle 48.

The clamp arrangement 10 can additionally include a first biasing member120 and a second biasing member 122. The first biasing member 120 can beat least partially received by the annular channel 96 provided on thefirst clamp member body 84. The second biasing member 122 can be atleast partially received into the blind bore 118 of the block 44. Thefirst biasing member 120 can be generally supported on an upper end by awasher 126 that is correspondingly supported by a bearing 130 journalledaround the spindle 26. The spindle 26 can additionally include a pair offlats 132 and channels 134 formed on a distal end. The flats 132 cangenerally correspond to the profile of the opening 72 formed in thesecond clamp member 38. The flats 132 can cooperate with the profile ofthe opening 72 to key the second clamp member 38 to the spindle 26 andinhibit rotation of the second clamp member 38 around a spindle axis140. In the example provided, the output member 24 can be generally inthe form of a drive fork that can impart rotational motion onto thespindle 26 around the spindle axis 140. Other configurations arecontemplated. A support bearing 142 can be arranged on one end of thespindle 26 for cooperatively mounting within the housing 20.

Returning to FIG. 3, the first accessory 14 a can be generally in theform of a cutting member having a working portion 146 and an attachmentportion 148. The attachment portion 148 can include a plurality ofmounting features 150 in the form of passages formed through the firstaccessory 14 a. The attachment portion 148 can further include anopen-ended aperture or throat 152 for selectively receiving a portion ofthe spindle 26 in an assembled position as will be described herein.

With specific reference now to FIGS. 4-6, an exemplary sequence ofremoving the first accessory 14 a from the clamp assembly 30 will bedescribed according to one example of the present teachings. Withinitial reference to FIG. 4, the clamp assembly 30 is shown in a closedposition wherein the biasing member 120 is supported on a first end bythe washer 126 and provides a downward biasing force onto the firstclamp member 36 at the annular channel 96. It is important to recognizethat in the particular example shown, the second clamp member 38 isfixed to the spindle 26. As shown, the male protrusions of the mountingfeatures 76 selectively locate into the recesses of the mountingfeatures 88 formed on the first clamp member 36. The first accessory 14a therefore is clamped between the second clamping surface 74 and thefirst clamping surface 87 while the male protrusions of the mountingfeatures 76 locate through passages of the mounting features 150 formedon the first accessory 14 a. Those skilled in the art will recognizethat while some of the mounting features are described and shown as maleprotrusions and some of the mounting features are described and shown asrecesses, the locations may be swapped. Moreover, other interlockinggeometries may be used. As viewed in FIG. 4, the lever 32 is shown andgenerally described herein as the first position.

With specific reference now to FIG. 5, the lever 32 is shown rotatedaround a pivot axle axis 160 of the pivot axle 48 to a second position.In the second position, the clamp assembly 30 is generally in the openposition where the first clamp member 36 is displaced or offset relativeto the second clamp member 38. In order to move the lever 32 from thefirst position (FIG. 4) to the second position (FIG. 5), a user can urgethe user engagement portion 42 (such as by pulling the user engagementportion 42 with an index finger) in a direction generally upwardly asviewed in FIG. 5 and toward the housing 20. In order to rotate the lever32 around the pivot axle 48, a user must overcome the biasing forces ofthe respective first and second biasing members 120 and 122. Duringrotation of the lever 32 around the pivot axle 48, the flange opposingsurface 110 in the pocket 108 of the lever body 100 (FIG. 3) generallytransmits an upward force (in a direction against the biasing force ofthe first biasing member 120) onto the lever opposing surface 91. Inthis regard, the lever 32 can generally lift the first clamp member 36at the annular flange 86 to move the first clamping surface 87 away fromthe second clamping surface 74. It will be appreciated that othermechanical configurations other than a lever that pivots about a pivotaxle may be used. For example, a camming configuration or slidableactuation member may be additionally or alternatively employed.

With the clamp assembly 30 in the open position, the first and secondclamp members 36 and 38, respectively, provide enough clearance, suchthat a user can remove the first accessory 14 a away from the clampassembly 30. In one example, it may be necessary to initially lift thefirst accessory 14 a away from the male protrusions of the mountingfeatures 76 before pulling the first accessory 14 a away from the clampassembly 30 (FIG. 6).

The clamp arrangement 10 of the present disclosure can provide asignificant mechanical advantage that can provide a particularly robustclamping action onto an accessory in a tight package requiringrelatively small space. In this regard, by mounting the pivot axle 48 onan opposite end of the user engagement portion 42 a user is offered asignificant moment arm that can act against the respective biasingforces of the first and second biasing members 120 and 122 while stilloffering a significant clamping force. According to other advantages,the location of the user engagement portion 42 provides an ergonomicallypleasing configuration adjacent to the housing 20 where a user's palmwould be generally positioned. In this regard, an index finger caneasily negotiate onto the user engagement portion 42 without having tosignificantly reposition a user's palm. Moreover, the user engagementportion 42 can be generally located between the housing 20 and the firstaccessory 14 a, such that a user can easily pull up on the userengagement portion 42 in a direction toward the housing with one handwhile removing/installing any given accessory with the other hand.

With specific reference now to FIGS. 7-9, perspective views of the clampassembly 30 are shown wherein FIG. 7 generally corresponds to thesectional view of FIG. 4 of the clamp assembly 30 in the closed positionand the lever 32 in the first position. FIG. 8 generally corresponds tothe sectional view of FIG. 5 where the clamp assembly 30 is in the openposition and the lever 32 is in the second position. FIG. 9 generallycorresponds to the sectional view of FIG. 6 where the clamp assembly 30is in the open position and the lever 32 is in the second position whilethe first accessory 14 a is removed from the clamp assembly 30.

With reference now to FIGS. 10-12, the clamp assembly 30 can be used toselectively clamp a given accessory, such as the first accessory 14 athrough a variety of rotational orientations around the spindle axis140. As identified above, the second clamp member 38 includes eightmounting features 76 however other configurations may be incorporated.The first accessory 14 a includes nine mounting features or passages150. The first accessory 14 a can be arranged in a plurality ofdifferent rotational orientations, such that the male protrusions 78 canbe aligned for passing through the passages 150 by rotating the firstaccessory 14 a into the orientation desired. As can be appreciated, itmay be advantageous to orient the first accessory 14 a differently for aparticular task. Once the passages 150 are aligned for receipt of themale protrusions 78 on the second clamp member 38 the attachment portion148 of first accessory is dropped onto the second clamping surface 74.

In the exemplary sequence shown in FIGS. 10-12, a user can initiallypull up the lever 32 at the user engagement portion 42 causing theannular flange 86 of the first clamp member 36 to be lifted aspreviously described. With the first clamp member 36 displaced from thesecond clamp member 38, the first accessory 14 a can be oriented intothe desired radial position and aligned with the corresponding maleprotrusions 78. The user can then release the user engagement portion 42allowing the first biasing member 120 (and the second biasing member122) to urge the first clamp member 36 in a direction toward the secondclamp member 38 until the respective first and second clamping surfaces87 and 74, respectively, engage and clamp the attachment portion 148 ofthe first accessory 14 a (FIG. 12).

Turning now to FIGS. 13-15, various examples are shown with the firstaccessory 14 a mounted around the second clamp member 38. In theexamples shown, the male protrusions of the mounting features 76 can bearranged to allow the first accessory 14 a to be indexed at about thirtydegree increments around the second clamping surface 74. When describingthe male protrusions of the mounting features 76 in the context of aclock, mounting features are absent at the two, four, eight and teno'clock positions. Other examples are contemplated.

With reference now to FIGS. 16-20, the clamp assembly 30 will bedescribed clamping the second accessory 14 b according to one example ofthe present teachings. As described above, the clamp assembly 30 isnormally biased into the closed position. As illustrated in FIG. 18, thelever 32 is shown rotated around the pivot axle axis 160 of the pivotaxle 48 to the second position. In the second position, the clampassembly 30 is generally in the open position where the first clampmember 36 is displaced relative to the second clamp member 38. With theclamp assembly 30 in the open position, the first and second clampmembers 36 and 38 respectively provide enough clearance to accept themounting collar 54 of the second accessory 14 b.

While a user maintains an upward force on the user engagement portion 42of the lever 32, the second accessory 14 b is directed toward the clampassembly 30, such that the spindle 26 is generally located through thethroat 66 (FIG. 19). Once the desired mounting features 62 of themounting collar 54 are aligned with the desired mounting features 76 ofthe second clamp member 38, the user can release the user engagementportion 42 of the lever 32 allowing the respective first and secondbiasing members 120 and 122 to return the lever 32 to the first position(FIG. 20). In the first position, the clamp assembly 30 is in the closedposition, such that the first clamping surface 87 of the first clampmember 36 as well as the second clamping surface 74 of the second clampmember 38 cooperatively clamp the mounting collar 54 of the secondaccessory 14 b.

Turning now to FIGS. 21 and 22, a third accessory 14 c and a method ofattaching the third accessory 14 c to the auxiliary attachment surface80 of the second clamp member 38 will be described. The third accessory14 c can generally include an iron-shaped member 170. A plurality ofmounting features 176 can be formed around an upper surface 178 of abody 172 of the third accessory 14 c. In the example shown, theplurality of mounting features 176 can be in the form of recesses havinga profile that generally mates with the plurality of mounting features82 extending from the auxiliary attachment surface 80. A mountingaperture 180 can be formed through the body 172 of the third accessory14 c for accepting a fastener 182 (FIG. 22). The fastener 182 canthreadably mate with a threaded bore 186 defined at a distal end of thespindle 26. Those skilled in the art will readily appreciate thatmovement of the lever 32 will not affect the attachment of the thirdaccessory 14 c as the third accessory 14 c only interfaces with thesecond clamp member 38 that is rigidly fixed to the spindle 26.

Turning now to FIGS. 23-26, a fourth accessory 14 d will be describedcooperating with the spindle 26 and the second clamp member 38. Thechannels 134 formed in the spindle 26 can provide clearance foraccepting other accessories, such as accessories that may define athroat 152 having a smaller entrance. In this regard, the reducedgeometry throat of an accessory may be initially negotiated through thechannel 134 prior to rotating the accessory into the desired orientationrelative to the spindle 26 and subsequently clamping the accessory tothe clamp assembly 30.

The fourth accessory 14 d can have an open-ended aperture or throat 190formed on an attachment portion 192. The throat 190 can generally span adistance 194. As compared to the throat 152 on the first accessory 14 a,the throat 190 provides a reduced distance 194. The channels 134provided on the spindle 26 are offset a distance 196 that is generallyless than the distance 194, such that the throat 190 can be advancedthrough the channels 134 until clearing the channels 134 at an oppositeend of the spindle 26 (see FIG. 24). Once the throat 190 has cleared thechannels 134, a user can rotate the fourth accessory 14 d to a desiredorientation around the second clamping surface 74 of the second clampmember 38. Once the desired orientation has been attained, theattachment portion 192 of the fourth accessory 14 d can be dropped ontothe second clamping surface 74 while the male protrusions of themounting features 76 locate through respective passages 198 formedthrough the attachment portion 192 on the fourth accessory 14 d (FIG.25). FIG. 26 illustrates a plan view that represents the relativedistances 194 of the throat 190 and 196 of the channels 134.

With reference now to FIGS. 27 and 28, a fifth accessory 14 e is shownthat has an attachment portion 200 having a plurality of mountingformations 202 formed therethrough. The mounting formations 202 can begenerally in the form of circular apertures. The circular apertures canhave a tapered shape. Other dimensions are contemplated that may stillhave a diameter (or opening in general) that is large enough to acceptthe diameter of the respective mounting features 76 on the second clampmember 38.

With reference now to FIGS. 29-34, a clamp arrangement constructed inaccordance to another example of the present disclosure is shown andgenerally identified at reference numeral 210. The clamp arrangement 210is shown operatively associated with a power tool 212 for selectivelyand alternatively retaining various accessories such as a sixthaccessory 14 f. The exemplary power tool 212 can generally include atool body 218 including a housing 220 that generally contains a motor222 that drives an output member 224. The output member 224 can becoupled to a spindle 226. The exemplary power tool 212 is configured forproviding an oscillating motion onto the spindle 226. As with the clamparrangement 10 described above, the clamp arrangement 210, whiledescribed herein as part of an oscillating hand tool, can also be usedwith other power tools that releasably secure an accessory.

The clamp arrangement 210 can further include a clamp assembly 230 (FIG.30) that operatively cooperates with a lever 232. The clamp assembly 230can generally include a first clamp member 236 and a second clamp member238. The lever 232 can include a lever arm 240 that includes a userengagement portion 242. The lever 232 can further include a pivotportion 246 having a pivot axle 248.

With specific reference now to FIGS. 30 and 31, the second clamp member238 will be further described. The second clamp member 238 can include asecond clamp body 250 generally in the form of a ring having a centralopening 252. The second clamp body 250 can generally comprise a secondclamping surface 254 having a plurality of mounting features 256 formedthereon. In one example, the second clamp body 250 and the plurality ofmounting features 256 can be formed as a unitary, monolithic part, suchas by precision cast steel.

As will become appreciated by the following discussion, the second clampmember 238 is configured such that the second clamping surface 254 doesnot actually engage the sixth accessory 14 f. In the example shown, theplurality of mounting features 256 are in the form of male conicalprotrusions 258. In the particular example shown, eight protrusions ormale conical protrusions 258 are configured to each have a tapered bodyportion 260 that generally tapers from the second clamping surface 254toward a tip 262. The tip 262 can generally comprise a sphericalgeometry. The male conical protrusions 258 each have a height 264measured from the second clamping surface 254 to a terminal end 266 ofthe tip 262. The male conical protrusions 258 can further define anangle 270 measured from a longitudinal axis 272 to an outer surface 276of the tapered body portion 260.

The male conical protrusions 258 can be configured to engage aperturesof the sixth accessory 14 f at a position intermediate the terminal end266 of the tip 262 and the second clamping surface 254. Explaineddifferently, the sixth accessory 14 f can be clamped with the lever 232in a first position and the clamp assembly 230 closed (FIG. 30), suchthat the sixth accessory 14 f is offset a distance 280 from the secondclamping surface 254. According to one example, the height 264 can besubstantially about 4 mm and the angle 270 can be substantially aboutbetween 20° and 30° and more specifically 25°. A diameter of the maleconical protrusions 258 measured at the second clamping surface 254 canbe substantially about 3 mm. The surface finish of the male conicalprotrusions 258 can be sufficiently hard so as not to deform frominteraction with the sixth accessory 14 f. In one example, the maleconical protrusions are at least 10 points (Rockwell hardness testing)harder than the sixth accessory 14 f. Other heights and angles arecontemplated.

With specific reference now to FIG. 30, the first clamp member 236 cangenerally include a first clamp member body 284 having an annular flange286. The first clamp member body 284 can include a clamping surface 287that has a plurality of mounting features 288 that are in the form ofrecesses that cooperatively receive the corresponding plurality ofmounting features 256 of the second clamp member 238. The mountingfeatures 288 can have any configuration, such as blind bores havingdiameters suitable to accept at least portions of the male conicalprotrusions 258 of the mounting features 256. The annular flange 286 cangenerally extend radially from an outer hub 290 of the first clampmember body 284. The annular flange 286 can have a lever opposingsurface 291. The first clamp member body 284 can further include aninner hub 292 that defines a first clamp member opening 294. The firstclamp member opening 294 can be configured to receive the spindle 226.An annular channel 296 can be formed between the outer hub 290 and theinner hub 292. The annular channel 296 can have a terminal surface 298.

The lever 232 can generally include a lever body 300 having the userengagement portion 242 formed generally on a first end and the pivotportion 246 formed on an opposite end. According to one example, thepivot portion 246 can generally include a pair of lobes 302 that eachdefine an axle passage similar to the axle passage 104 described abovewith respect to FIG. 3. The lever body 300 can further include a pocket308 having a flange opposing surface 310. A retainer plate 312 can beformed on the lever body 100. The retainer plate 312 can be configuredto rest on the annular flange 286 when the lever 232 is released. Thepivot axle 248 can be configured to pass through the respective axlepassages of the lobes 302 and a corresponding axle passage 316 formedthrough an arm 318 extending from the housing 220.

The clamp arrangement 210 can additionally include a biasing member 320and a washer 326. The biasing member 320 can be at least partiallyreceived by the annular channel 296 provided on the first clamp memberbody 284. The biasing member 320 can be generally supported on an upperend by a washer 326 that is correspondingly supported by a flange on thespindle 226. A distal end of the spindle 226 can be configured to attaina press fit relationship (through the central opening 252) with thesecond clamp body 250.

With particular reference now to FIG. 32, the sixth accessory 14 f willbe described. The sixth accessory 14 f can generally be in the form of acutting member having a working portion 346 and an attachment portion348. The attachment portion 348 can include a plurality of mountingfeatures 350 in the form of passages formed through the sixth accessory14 f. The attachment portion 348 can further include an open-endedaperture or throat 352 for selectively receiving a portion of thespindle 226 in an assembled position as will be described herein.According to one example of the present teachings, the plurality ofmounting features 350 can be circular and have a diameter 358 ofsubstantially about 2.8 mm. The throat 352 can define an angle 360 ofabout 60°. Other dimensions are contemplated. It will be appreciatedhowever that the diameter 358 is selected to have a geometry such thatit will engage the tapered body portion 260 of the male conicalprotrusions 258 at a location intermediate the terminal end 266 of thetip 262 and the second clamping surface 254. More particularly, thediameter 358 has a geometry that will ensure the attachment portion 348does not bottom out or rest on top of the second clamping surface 254.In other words, the distance 280 (FIG. 30) must be greater than zero.

The mounting features 256 can be arranged to allow the sixth accessory14 f to be indexed at about 30° increments around the second clampingsurface 254. Like the mounting features 76 described above, the mountingfeatures 256 are absent at the two, four, eight and ten o'clockpositions. It is further appreciated that the clamp assembly 230 can beused to clamp other accessories, such as described herein. Otherconfigurations are contemplated.

With specific reference now to FIGS. 30 and 34, an exemplary sequence ofremoving the sixth accessory 14 f from the clamp assembly 230 will bedescribed according to one example of the present teachings. Withinitial reference to FIG. 30, the clamp assembly 230 is shown in aclosed position wherein the biasing member 320 is supported on a firstend by the washer 326 and provides a downward biasing force onto thefirst clamp member 236 at the annular channel 296. It is important torecognize that in the particular example shown, the second clamp member238 is fixed relative to the spindle 226. As shown, the male conicalprotrusions 258 selectively locate into the recesses of the mountingfeatures 288 formed on the first clamp member 236. The sixth accessory14 f therefore is clamped between the clamping surface 287 and the outersurfaces 276 of the respective male conical protrusions 258. Again, thesixth accessory 14 f is clamped at a location offset from the secondclamping surface 254 of the second clamp member 238. As viewed in FIG.30, the lever 232 is shown and generally described herein as the firstposition. Because the sixth accessory 14 f is specifically engaged atthe mounting features 350, the sixth accessory 14 f can be securelyfixed against the clamping surface 287 with minimal or no relativemovement between the sixth accessory 14 f and the clamp assembly 230.

Turning now specifically to reference FIG. 34, the lever 232 is shownrotated from the first position (phantom line) around the pivot axleaxis 249 to a second position (solid line). In the second position, theclamp assembly 230 is generally in the open position where the firstclamp member 236 is displaced or offset relative to the second clampmember 238. In order to move the lever 232 from the first position(phantom line, FIG. 34) to the second position (solid line, FIG. 34), auser can urge the user engagement portion 242 (such as by pulling theuser engagement portion 242 with an index finger) in a directiongenerally upwardly as viewed in FIG. 34 and toward the housing 220. Inorder to rotate the lever 232 around the pivot axle 248, a user mustovercome the biasing force of the biasing member 320 (FIG. 30). Duringrotation of the lever 232 around the pivot axle 248, the flange opposingsurface 310 and the pocket 308 of the lever body 300 generally transmitsan upward force (in a direction against the biasing force of the biasingmember 320) onto the lever opposing surface 291. In this regard, thelever 232 can generally lift the first clamp member 236 at the annularflange 286 to move the clamping surface 287 away from the second clampmember 238.

With the clamp assembly 230 in the open position, the first and secondclamp members 236 and 238, respectively, provide enough clearance, suchthat a user can remove the sixth accessory 14 f away from the clampassembly 230. In one example, it may be necessary to initially lift thesixth accessory 14 f away from the male conical protrusions 258 beforepulling the sixth accessory 14 f away from the clamp assembly 230.

The pivot axle 248 can be located a distance 370 measuredperpendicularly from a point 372 on a longitudinal centerline of thespindle 226. In one example, the distance 370 can be long enough to givethe user a mechanical advantage to comfortably overcome the bias of thebiasing member 320 when moving the lever 232 to the second position(clamp assembly 230 open). A distance 374 measured between the point 372and a plane defined by the clamping surface 287 can be less than thedistance 370.

With reference now to FIGS. 35-38, a clamp arrangement constructed inaccordance to another example of the present disclosure is shown andgenerally identified at reference numeral 410. The clamp arrangement 410is shown operatively associated with a first power tool 412 a and asecond power tool 412 b. As will be described in detail herein, theclamp arrangement 410 includes a clamp assembly 414 that is configuredto be selectively and alternatively coupled to either of the first powertool 412 a or the second power tool 412 b. The clamp assembly 414 isconfigured to selectively and alternatively retain various accessoriessuch as a seventh accessory 14 g (FIG. 37). As will become appreciatedfrom the following discussion, the clamp assembly 414 is configured tosuitably couple with an output member 416 a provided on the first powertool 412 a or an output member 416 b provided on the second power tool412 b. In this regard, the output member 416 a may include a first toolmating detail 418 a having a first mating geometry 420 a. The outputmember 416 b may incorporate a second tool mating detail 418 b having asecond mating geometry 420 b. In the example shown, the first matinggeometry 420 a provided on the output member 416 a includes twelvecircular shaped protrusions 422 a. The second mating geometry 420 bprovided on the output member 416 b includes a male protrusion 422 b.The male protrusion 422 b may alternatively comprise either of a fourpoint star or a hexagonal protrusion. As will become appreciated herein,the clamp assembly 414 includes complementary geometry suitable toselectively and alternatively mate with an output member 416 a having amale protrusion 422 b in the form of a four point star or a hexagon.

The first power tool 412 a generally includes a tool body 430 a having ahousing 432 a that generally contains a motor 434 a that drives theoutput member 416 a. Similarly, the second power tool 412 b includes atool body 430 b having a housing 432 b that contains a motor 434 b thatdrives the output member 416 b. The output members 416 a and 416 b ofthe respective first and second power tools 412 a and 412 b can beconfigured to provide an oscillating motion.

The clamp assembly 414 generally includes an attachment plate 440 havinga lever 442 pivotally coupled thereto. The clamp assembly 414 cangenerally include a first clamp member 446 and a second clamp member 448(FIG. 36). The lever 442 can include a lever arm 450 that includes auser engagement portion 452. The lever 442 can further include a pivotportion 454 having a pivot axle 456.

The second clamp member 448 can include a second clamp body 460generally in the form of a ring having a central opening 462. The secondclamp body 460 can generally comprise a second clamping surface 464having a plurality of mounting features 466 formed thereon. In oneexample, the second clamp body 460 and the plurality of mountingfeatures 466 can be formed as a unitary, monolithic part, such as byprecision cast steel. In other examples, the plurality of mountingfeatures 466 may be separately formed and coupled to the clamp body 460.The second clamp member 448 may be configured similarly to the secondclamp member 238 described above. In this regard, the second clampmember 448 may comprise eight protrusions or male conical portions thatare configured to each have a tapered body portion that generally tapersfrom the second clamping surface 464 toward a tip.

The first clamp member 446 can generally include a first clamp memberbody 474 having an annular flange 476. The first clamp member body 474can include a clamping surface 478 that has a mounting feature 480 thatis in the form of an annular recess that cooperatively receive thecorresponding plurality of mounting features 466 of the second clampmember 448. The mounting feature 480 can have any configuration that maycooperatively accept at least portions of the mounting features 466. Theannular flange 476 can generally extend radially from an outer hub 490of the first clamp member body 474. The annular flange 476 can have alever opposing surface 492. The first clamp member body 474 can furtherinclude an inner hub 494 that defines a first clamp member opening 496.The first clamp member opening 496 can be configured to receive afastener 500. The fastener 500 can generally include a fastener head 502and threads 504 formed on a distal end 506. The head 502 may incorporatean optional flange 508. The threads 504 can be configured to threadablymate with a threaded bore 510 a defined in the output member 416 a (or athreaded bore 510 b formed in the output member 416 b). In someexamples, a cannulated sleeve 512 having a cannulation 514 may bepositioned between the fastener 500 and the first clamp member opening496 of the inner hub 494. The cannulated sleeve 512 can be fixed betweenthe attachment plate 440 and the second clamp body 460. An annularchannel 516 can be formed between the outer hub 490 and the inner hub494. The annular channel 516 can have a terminal surface 518. A biasingmember 520 can be partially received by the annular channel 516. Theoperation of the biasing member 520 is similar to that described abovewith respect to the biasing member 120 (FIGS. 4-6).

In general, the lever 442, first clamp member 446, and second clampmember 448 may function similar to the configurations described above.However, with the clamp assembly 414 as described with respect to FIGS.35-38, the attachment plate 440 can be selectively secured to variouspower tools including the first power tool 412 a and the second powertool 412 b. The attachment plate 440 can generally include an attachmentplate body 530 that provides an attachment plate mating detail 532. Theattachment plate mating detail 532 can generally comprise a centralrecess 534 and a plurality of receiving portions 536 formed thereon. Inthe example provided, the central recess 534 can be generally defined bya keyed sidewall 540 defined into the body 530. Similarly, the pluralityof receiving portions 536 can be generally defined into the body 530 asoval recesses 544. The keyed sidewall 540 can generally be in the formof a twelve point star. As can be appreciated, the oval recesses 544 canbe configured to selectively receive the protrusions 422 a provided onthe first mating geometry 420 a of the first power tool 412 a. Notably,the oval recesses 544 are configured to suitably receive circular shapedprotrusions 422 a of multiple tools having various diameters. Similarly,the central recess 534 can be configured to cooperatively receive themale protrusion 422 b (either the four point star in one configuration,or the hexagon in another configuration) provided by the second matinggeometry 420 b. In this regard, the attachment plate 440 may offer auser a variety of distinct mounting configurations for suitably couplingthe clamp assembly 414 to a wide range of power tools including thefirst and second power tools 412 a and 412 b shown in FIG. 35. It willbe further appreciated that the interlocking geometries of the matingdetail 532 of the attachment plate 440 and the first and second toolmating details 418 a and 418 b of the first and second power tools 412 aand 412 b, respectively may take other shapes.

In one example of coupling the clamp assembly 414 to the first powertool 412 a, a user may initially align the attachment plate matingdetail 532 with the first tool mating detail 418 a. In the exampleprovided, the user may align the oval recesses 544 defined in the body530 of the attachment plate 440 for receipt of the complementarycircular protrusions 422 a extending from the first mating geometry 420a of the output member 416 a. As can be appreciated, once theprotrusions 422 a are selectively received by the oval recesses 544 inthe attachment plate 440, the clamp assembly 414 is rotationally fixedwith the output member 416 a. Next, a user may advance the fastener 500through the cannulation 514 of the cannulated sleeve 512 and threadablyadvance the threads 504 into the threaded bore 510 a defined in theoutput member 416 a. In the example provided, the head 502 can engage anouter surface 548 of the second clamp member 448. As can be appreciated,in the assembled position (FIGS. 36-38), the clamp assembly 414 will befixed for oscillating motion with the output member 416 a of the firstpower tool 412 a. As shown in FIGS. 37-38, the clamp assembly 414 mayselectively accept the accessory 14 g similar to the clamp assembly 230(FIG. 30) described above. Therefore, the sequence will not be repeatedhere.

With reference now to FIGS. 39-43, a clamp arrangement constructed inaccordance to another example of the present disclosure is shown andgenerally identified at reference numeral 610. The clamp arrangement 610is shown generally associated with the first power tool 412 a (FIG. 40).As will be described in detail herein, the clamp arrangement 610includes a clamp assembly 614 that is configured to be selectivelycoupled to the first or second power tools 412 a and 412 b. Again, itwill be appreciated that the clamp assembly 614 may incorporateadditional or alternative geometry for mating with other power toolssuch as those described herein. The clamp assembly 614 is configured toselectively and alternatively retain various accessories such as theseventh accessory 14 g (FIG. 43). The clamp assembly 614 is configuredto suitably couple with either of the output member 416 a provided onthe first power tool 412 a or the output member 416 b provided on thesecond power tool 412 b.

The clamp assembly 614 generally includes an attachment plate 640 havinga first clamp member 646 and a second clamp member 648. The first clampmember 646 is configured to translate relative to the second clampmember 648. The first clamp member 646 can generally include a firstclamp member body 674 having an annular flange 676. The clamp assembly614 is configured to operate similar to the clamp assembly 414 describedabove but without the incorporation of a lever. In this regard, a usermay engage the annular flange 676 and translate the first clamp memberbody 674 toward the attachment plate 640 against the bias of a biasingmember 680 to move the first clamp member 646 from a clamped position(FIG. 43) to an unclamped position (FIG. 44).

The second clamp member 648 can include a second clamp body 682. Thesecond clamp body 682 can be generally formed similar to the secondclamp body 460 described above and will not be repeated here. Theattachment plate 640 can generally include an attachment plate body 684that provides an attachment plate mating detail 686. The attachmentplate mating detail 686 can generally comprise a raised annular rim 688having a central recess 689 and a plurality of receiving portions 690formed thereon. In the example provided, the raised rim 688 incorporatestwelve receiving portions 690 in the form of oval recesses 692. As canbe appreciated, the oval recesses 692 can be configured to selectivelyreceive the protrusions 422 a provided on the first mating geometry 420a of the first power tool 412 a. The central recess 689 can be a keyedsidewall 693 defined into the attachment plate body 684. The keyedsidewall 693 can generally be in the form of a twelve point star.

In one example of coupling the clamp assembly 614 to the first powertool 612 a, a user may initially align the attachment plate matingdetail 686 defined in the body 684 of the attachment plate 640 forreceipt of the complementary circular protrusions 422 a extending fromthe first mating geometry 420 a of the output member 416 a. Once theprotrusions 422 a are selectively received by the oval recesses 692 inthe attachment plate 640, the clamp assembly 614 is rotationally fixedwith the output member 616 a. Next, a user may advance the fastener 500through a cannulation 694 of a cannulated sleeve 696 and threadablyadvance the threads 504 into the threaded bore 510 a defined in theoutput member 416 a.

With reference now to FIGS. 44-46, an attachment assembly constructed inaccordance to additional features of the present disclosure is shown andgenerally identified at reference numeral 710. In general, theattachment assembly 710 generally includes an adapter plate 712, a clampplate 714, and a fastener 716. As will become appreciated from thefollowing discussion, the attachment assembly 710 may be configured tocooperate with any of the clamping arrangements discussed above forcoupling an accessory, such as an accessory 14 f to the clamp assembly720 provided on a power tool 722. Specifically, the attachment assembly710 may be configured to suitably connect to a second clamp member 726of the clamp assembly 720 that may additionally include a first clampmember 728.

The second clamp member 726 can generally include a raised central boss730 that can define flats 732 and 734 thereon. An opening 736 can alsobe formed through the second clamp member 726. The first clamp member728 may define a threaded aperture 740 therein. The adapter plate 712can generally define an adapter plate body 742 having a central opening744. The central opening 744 may be defined in part by a radial sidewall746 having diametrically opposed flats 748. The body 742 canadditionally include a plurality of outwardly extending protrusions 750thereon. The clamp plate 714 can generally include a clamp plate body754 that defines a central opening 756 therein. The fastener 716 maygenerally include a threaded shank 758 and a proximal head 760. The head760 can define a gripping detail 762. The exemplary gripping detail 762is in the form of a hex recess, however other details may beincorporated.

In one example of coupling the attachment assembly 710 to the power tool722, the adapter plate 712 may be located onto the second clamp member726. In this regard, the opposing flats 748 of the adapter plate 712 canbe rotationally aligned with the corresponding flats 732 and 734provided on the raised central boss 730 of the second clamp member 726.The fastener 716 may then be inserted through the opening 756 of theclamp plate 714 and through an opening 770 in the accessory 14 f. Thethreaded shank 758 can then be threadably advanced into the threadedaperture 740 defined in the first clamp member 728 until the clamp plate714 clamps the accessory 14 f against the adapter plate 712 (FIG. 48).As can be appreciated, the protrusions 750 extending from the adapterplate body 742 can provide additional gripping onto the accessory 14 f.

With reference now to FIGS. 47-50, a clamp arrangement constructed inaccordance to another example of the present disclosure is shown andgenerally identified at reference numeral 810. The clamp arrangement 810is shown generally associated with a first output member 416 a (FIG. 49)of the first power tool 412 a (FIG. 40). As will be described in detailherein, the clamp arrangement 810 includes a clamp assembly 814 that isconfigured to be selectively coupled to the first or second power tools412 a and 412 b. Again, it will be appreciated that the clamp assembly814 may incorporate additional or alternative geometry for mating withother power tools such as those described herein. The clamp assembly 814is configured to selectively and alternatively retain variousaccessories such as the seventh accessory 14 g (FIGS. 49-50). In thisregard, the clamp assembly 814 is configured to suitably couple witheither of the output member 416 a provided on the first power tool 412 aor the output member 416 b provided on the second power tool 412 b.

The clamp assembly 814 generally includes an attachment plate 820 havinga first clamp member 822 movably coupled thereto. The first clamp member822 can generally include a first clamp member body 824 that defines athrough bore 826 (FIG. 48), an inset 828, a blind bore 830, and a radialchannel 832 (FIG. 49). A fastener 500 can include threads 504 thatthreadably mate with corresponding threads defined in the output member416 a. The fastener 500 can therefore capture the clamp assembly 814 tothe identified power tool.

The first clamp member 822 is configured to translate relative to asecond clamp member 838 as will become appreciated from the followingdiscussion. The second clamp member 838 can include a second clamp body840. The second clamp body 840 can be generally formed similar to thesecond clamp body 460 described above and will not be repeated here. Theattachment plate 820 can generally include an attachment plate body 844that provides an attachment plate mating detail 846. The attachmentplate mating detail 846 can generally comprise a raised annular rim 848having a central recess 850 and a plurality of receiving portions 852formed thereon. In the example provided, the raised rim 848 incorporatestwelve receiving portions 852 in the form of oval recesses 854. The ovalrecesses 854 can be configured to selectively receive the protrusions422 a provided on the first mating geometry 420 a of the first powertool 412 a. Again, the oval recesses 854 can cooperatively mate withprotrusions 422 a having various diameters.

The central recess 850 can be a keyed sidewall 858 defined into theattachment plate body 844. The keyed sidewall 858 can generally be inthe form of a twelve point star. In the example provided, the attachmentplate 820 further comprises a stem 860 extending therefrom. The stem 860can be integrally formed or coupled to the attachment plate 820 and tothe second clamp member 838. The stem 860 defines a longitudinal axis862. A first series of ridges 864 can be formed around the stem 860. Thefirst series of ridges 864 can collectively define a first grippingdetail 866. The first gripping detail 866 can therefore be associatedwith, or fixed relative to, the second clamp member 838.

With particular reference now to FIGS. 48 and 49, additional features ofthe clamp assembly 814 will be described. A first biasing member 870 canbe located generally around the stem 860 and configured for engaging theclamp member body 824 at the inset 828 on one end and the attachmentplate 820 on an opposite end. In this regard, the first biasing member870 can provide a biasing force onto the clamp member body 824 in thedirection of the second clamp member 838 or downwardly along thelongitudinal axis 862. A button 872 defines a button axis 873 and can beat least partially received into the blind bore 830 of the clamp memberbody 824 against a bias of a second biasing member 874. The button 872includes a second series of ridges 878 that collectively define a secondgripping detail 880. In the example provided, the first and secondseries of ridges 864, 878 comprise discontinuous, stepped radial ridges.

With reference now to FIGS. 49 and 50, operation of the clamp assembly814 according to one example of the present teachings will be described.At the outset, it will be appreciated that the first series of ridges864 can cooperate with the second series of ridges 878 for locating thebutton 872 at a desired location along the stem 860. Explained ingreater detail, the second biasing member 874 can provide a bias againstthe button 872 forcing the button 872 in a direction rightward as viewedin FIG. 49 along the button axis 873. In this regard, the secondgripping detail 880 of the second series of ridges 878 on the button 872are caused to mate and therefore cooperatively lock with the firstgripping detail 866 of the first series of ridges 864 on the stem 860.When an operator wishes to change the location of the clamp member body824, the button 872 can be depressed or translated in a directionleftward along the button axis 873 against the bias of the secondbiasing member 874. In this regard, the first series of ridges 864 andthe second series of ridges 878 are caused to disengage whereby theoperator can subsequently translate the clamp member body 824 in adirection along the axis 862 of the stem 860.

Once the desired elevation has been achieved, the operator can releasethe button 872 causing the respective first and second ridges 864 and878 to lock. At this time, the user can place the desired accessorybetween the first and second clamp members 822 and 838. Next, the usercan again depress the button 872 allowing the first biasing member 870to direct the clamp member body 824 in a direction toward the accessory14 g until the accessory 14 g is suitably clamped between the first andsecond clamp members 822 and 838. It will be appreciated that theoperator is not required to release the button 872 to lock the clampmember body 824 at a displaced position from the second clamp member 838while inserting the accessory 14 g.

With reference now to FIGS. 51-54, a clamp arrangement constructed inaccordance to another example of the present disclosure is shown andgenerally identified at reference numeral 910. The clamp arrangement 910is shown generally associated with a first output member 416 a (FIG. 53)of the first power tool 412 a (FIG. 40). As will become understood fromthe following discussion, the clamp assembly 910 includes a clampassembly 914 that is configured to be selectively coupled to the firstor second power tools 412 a and 412 b. Again, it will be appreciatedthat the clamp assembly 914 may incorporate additional or alternativegeometry for mating with other power tools such as those describedherein. The clamp assembly 914 is configured to selectively andalternatively retain various accessories such as the seventh accessory14 g (FIGS. 53-54). In this regard, the clamp assembly 914 is configuredto be suitably coupled with either of the output member 416 a providedon the first power tool 412 a or the output member 416 b provided on thesecond power tool 412 b.

The clamp assembly 914 generally includes an attachment plate 920 havinga first clamp member 922 movably coupled thereto. The first clamp member922 can generally include a first clamp member body 924 that defines athrough bore 926 (FIG. 52), an inset 928, a blind bore 930, and a radialchannel 932. The first clamp member body 924 includes an annular flange934. As will be described herein, the annular flange 934 can facilitatea gripping of the user onto the clamp member body 924. A fastener 500′can include threads 504′ that threadably mate with corresponding threadsdefined in the output member 416 a. The fastener 500′ can thereforecapture the clamp assembly 914 to the identified power tool.

The first clamp member 922 is configured to translate relative to asecond clamp member 938 as will become appreciated from the followingdiscussion. The second clamp member 938 can include a second clampmember body 940. The second clamp body 940 can be generally formedsimilar to the second clamp body 460 described above and will not berepeated. The attachment plate 920 can generally include an attachmentplate body 944 that provides an attachment plate mating detail 946. Theattachment plate mating detail 946 can generally comprise a raisedannular rim 948 having a central recess 950 and a plurality of receivingportions 952 formed thereon. In the example shown, the raised rim 948incorporates twelve receiving portions 952 in the form of oval recesses954. The oval recesses 954 can be configured to selectively receive theprotrusions 422 a provided on the first mating geometry 420 a of thefirst power tool 412 a. Again, the oval recesses 954 can cooperativelymate with protrusions 422 a having various diameters.

The central recess 950 can be a keyed sidewall 958 defined into theattachment plate body 944. The keyed sidewall 958 can generally be inthe form of a twelve point star. In the example provided, the attachmentplate 920 further comprises a stem 960 extending therefrom. The stem 960is shown separately formed from the attachment plate 920 and to thesecond clamp member 938. However, it is contemplated that the stem 960can be integrally formed with the attachment plate 920. The stem 960defines a longitudinal axis 962. A first series of threads 964 can beformed around the stem 960. The first series of threads 964 cancollectively define a first gripping detail 966. The first grippingdetail 966 can therefore be associated with, or fixed relative to, thesecond clamp member 938.

With particular reference now to FIG. 52, additional features of theclamp assembly 914 will be described. A first biasing member 970 can belocated generally around the stem 960 and configured for engaging theclamp member body 924 at the inset 928 on one end and the attachmentplate 920 on an opposite end. In this regard, the first biasing member970 can provide a biasing force onto the clamp member body 924 and thedirection of the second clamp member 938 or downwardly along thelongitudinal axis 962. A button 972 defines a button axis 973 and can beat least partially received into the blind bore 930 of the clamp memberbody 924 against a bias of a second biasing member 974. The button 972includes a second series of threads 978 that collectively define asecond gripping detail 980.

With particular reference now to FIGS. 53 and 54, operation of the clampassembly 914 according to one example of the present teachings will bedescribed. At the outset, it will be appreciated that the first seriesof threads 964 can threadably mate with the second series of threads 978for locating the button 972 at the desired location along the stem 960.Explained in greater detail, the second biasing member 974 can provide abias against the button 972 forcing the button 972 in a directionrightward as viewed in FIG. 53 along the button axis 973. In thisregard, the second gripping detail 980 of the second series of threads978 are caused to mate and therefore cooperatively lock with the firstgripping detail 966 of the first series of threads 964 on the stem 960.When an operator wishes to change the location of the clamp member body924, the button 972 can be translated in a direction leftward (as viewedin FIG. 52) along the button axis 973 against the bias of the secondbiasing member 974. In this regard, the first series of threads 964 andthe second series of threads 978 are caused to disengage whereby theoperator can subsequently translate the clamp member body 924 in adirection along the axis 962 of the stem 960. Once the desired elevationhas been achieved, the operator can release the button 972 causing therespective first and second series of threads 964 and 978 to lock.Alternatively, an operator may rotate the first clamp member body 924 ina direction generally around the longitudinal axis 962 causing the firstclamp member 922 to threadably advance along the first series of threads964 to a desired position.

At this time, the user can place the desired accessory between the firstand second clamp members 922 and 938. Next, the user can again depressthe button 972 allowing the first biasing member 970 to direct the clampmember body 924 in a direction toward the accessory 14 g until theaccessory 14 g is suitably clamped between the first and second clampmembers 822 and 838. Again, a user may alternatively rotate the firstclamp member body 924 to move the first clamp member 922 into a positionthat suitably clamps the accessory 14 g between the first and secondclamp members 922 and 938, respectively. Notably, in the configurationof the clamp assembly 914, a user can optionally further rotate theclamp member body 924 in a direction around the axis 962 causing thefirst and second series of thread portions 964 and 978 to engage wherebythe user can further translate the first clamp member body 924 towardthe second clamp member 938. Such a configuration may be particularlyadvantageous for aggressive applications where it may be desired toprovide an increased clamping force onto an accessory.

With reference now to FIGS. 55 and 56, the clamp arrangement 910 isshown operatively clamping an accessory 14 b in the form of a sandingplaten. The accessory 14 b can be suitably clamped between the first andsecond clamp members 922 and 938. Again, the first clamp member body 924can be rotated around the stem 960 to provide a tighter clamping forceonto the accessory 14 b.

With reference now to FIGS. 57-59 and 61-70, a clamp arrangementconstructed in accordance to another example of the present disclosureis shown and generally identified at reference numeral 1010. The clamparrangement 1010 can be selectively and alternatively coupled to variouspower tools such as the first or second power tools 412 a and 412 bdescribed above (FIG. 35). The clamp arrangement 1010 generally includesa clamp assembly 1014 that may be configured to selectively andalternatively retain various accessories such as the seventh accessory14 g (FIG. 43).

Referring to FIG. 58, the clamp assembly 1014 generally includes a firstclamp member 1020, a second clamp member 1022, an attachment plate 1024,a stem 1030, a cam body 1032, a biasing member 1034, and a fastener1040. As will be appreciated from the following discussion, the firstclamp member 1020 is configured to translate along an axis 1042 of thefastener 1040 relative to the second clamp member 1022 upon rotation ofthe first clamp member 1020. In this regard, rotation of the first clampmember 1020 in a first direction can cause the first clamp member 1020to translate toward the second clamp member 1022 into a closed orclamped position (FIGS. 59 and 68). Similarly, rotation of the firstclamp member 1020 in a second, opposite direction can cause the firstclamp member 1020 to translate away from the second clamp member 1022into a fully open or unclamped position (FIGS. 57 and 70).

With particular reference to FIGS. 58 and 62, the first clamp member1020 can include a first clamp member body 1050 that generally includesan outer ribbed gripping surface 1052, an upper recess 1053 (FIG. 68), alower recess 1054 (FIG. 62), a central opening 1056, a cam follower body1060, and a clamping surface 1062. The gripping surface 1052 can furtherinclude a double-ended arrow identifier 1066 that points in directionsgenerally transverse to the axis 1042 to indicate to the user that thefirst clamp member body 1050 is configured to be rotated around the axis1042. The lower recess 1054 can be sized to receive the cam body 1032(see also FIGS. 68-70). The lower recess 1054 can also be sized to atleast partially receive portions of the second clamp member 1022 in theclosed or clamped position (FIG. 68). The upper recess 1053 can receivea portion of the biasing member 1034. In one configuration, the biasingmember can be mounted for compression between the attachment plate 1024and a terminal end 1068 of the upper recess 1053.

The cam follower body 1060 can generally include a plurality of campawls 1070. As will be described below, the cam pawls 1070 of the camfollower body 1060 are configured to slidably negotiate along featuresof the cam body 1032 to influence the first clamp member body 1050, andtherefore the first clamp member 1020, to translate along the axis 1042(FIG. 57) relative to the second clamp member 1022.

With particular reference now to FIGS. 58, 61, and 63, the cam body 1032will be described in greater detail. The cam body 1032 generallyincludes a plurality of cam ramps 1074 that are positioned betweenrespective cam valleys and cam plateaus 1076 and 1078. Each of the camplateaus 1078 can further include a cam stop 1080 formed thereon. Thecam body 1032 can further include an opening 1082 therein. The cam body1032 can further include a planar mounting surface 1084 (FIG. 66) that,together with the opening 1082, is configured to provide a keyway fornon-rotatably receiving the stem 1030. As can be appreciated, the campawls 1070 of the cam follower body 1060 are configured to slidablynegotiate around the respective cam ramps 1074 between the cam plateaus1078 (corresponding to the clamp assembly 1014 being in an open positionFIG. 70) and a position on or near the cam valleys 1076 (correspondingto the clamp assembly 1014 being in a closed or clamped position, FIG.68). It will be appreciated that while three cam pawls 1070 and camramps 1074 have been incorporated on the clamp assembly 1014, otherconfigurations are contemplated.

Referring now to FIGS. 58 and 68-70, the stem 130 will be furtherdescribed. The stem 130 generally includes a cylindrical body 1090 thatdefines a throughbore 1092. The stem 1030 further includes a flat 1094(FIG. 58) formed on the body 1090. The flat 1094 incorporates a ledge1096 at a terminal end thereof. The stem 1030 further includes a distalseat 1100 and a proximal seat 1102. The second clamp member 1022 can befixedly and non-rotatably secured to the stem 1030 at the distal seat1100. Similarly, the attachment plate 1024 can be fixedly andnon-rotatably secured to the stem 1030 at the proximal seat 1102. Theplanar mounting surface 1084 (FIG. 66) of the cam body 1032 can locateagainst the flat 1094 such that the cam body 1032 is non-rotatably fixedto the stem 1030 at the ledge 1096. It is appreciated that onceassembled, the cam body 1032 is further precluded from translating alongthe stem 1030.

The second clamp member 1022 can include a second clamp member body 1110having a plurality of mounting features 1112 extending therefrom. Themounting features 1112 can be generally in the form of male conicalprotrusions such as the male conical protrusions 258 described in detailabove with respect to FIG. 31. According to one example, the maleconical protrusions of the mounting features 1112 can be configured toengage apertures of an accessory. By way of example, the mountingfeatures 1112 can be configured to engage apertures of the sixthaccessory 14 f at a position intermediate the terminal end of the tipsand a second clamp surface 1114 on the second clamp member 1022 such asdescribed above with respect to FIG. 30.

With particular reference now to FIG. 59, the attachment plate 1024 cangenerally include an attachment plate body 1140 that provides anattachment plate mating detail 1142. The attachment plate mating detail1142 can generally comprise an annular rim 1144 having a central recess1146 and a plurality of receiving portions 1148 formed thereon. In theexample provided, the rim 1144 incorporates twelve receiving portions1148 in the form of oblong recesses that extend into and connect withthe central recess 1146. As can be appreciated, the oblong recesses canbe configured to selectively receive protrusions provided on a firstpower tool (such as the first power tool 412 a, FIG. 35). Alternatively,the central recess 1146 can be configured to receive the correspondingmating geometry of a second power tool (such as the second power tool412 b, FIG. 35).

In one example of coupling the clamp arrangement 1010 to a first powertool (such as the first power tool 412 a, FIG. 35), a user may initiallyalign the attachment plate mating detail 1142 defined in the attachmentplate body 1140 for receipt of the complementary circular protrusions(such as protrusions 422 a, FIG. 35). Once the protrusions of the powertool are selectively received by the receiving portions 1148 in theattachment plate 1140, the clamp assembly 1014 is rotationally fixedwith the output member of the tool. Next, a user may advance thefastener 1040 through the throughbore 1092 defined through the stem1030. The fastener 1040 can be fixedly coupled to the output member ofthe tool such as by threads formed on a distal end of the fastener 1040(not specifically shown). FIG. 60 illustrates a clamping arrangement1010′. The clamping arrangement 1010′ is constructed similar to theclamping arrangement 1010 described above except an attachment plate1024′ provides a mating detail 1142′ that includes a plurality ofreceiving portions 1148′ that do not intersect with a central recess1146′. The mating detail 1142′ may be constructed similar to the matingdetail 686 described above and shown in FIG. 40.

With specific reference now to FIGS. 68, 70, operation of the clampassembly 1014 according to one example of the present disclosure willnow be described. As can be appreciated, the biasing member 1034normally biases the first clamp member 1020 toward and into engagementwith the second clamp member 1022. To move the first clamp member 1020from the closed position (FIG. 68) toward an open position (FIG. 70), auser can rotate the first clamp member 1020 in a first direction(counter-clockwise as viewed in FIG. 58). Rotation of the first clampmember 1020 in the first direction will cause the respective cam pawls1070 to slidably negotiate from a position generally on or adjacent tothe cam valleys 1076 on the cam body 1032 along the cam ramps 1074 (FIG.61). As the cam body 1032 is fixed relative to the stem 1030, the campawls 1070 ride up the respective cam ramps 1074 thereby causing thefirst clamp member 1020 to move away from the second clamp member 1022(or in a direction up as viewed from FIG. 68 to FIG. 78). The firstclamp member 1020 can continue to rotate until the cam pawls 1070 locateonto the respective cam plateaus 1078 (FIG. 61) on the cam body 1032.Engagement of the respective cam pawls 1070 with the cam stops 1080 willpreclude further rotation of the first clamp member 1020 conveying to auser that the first clamp member body 1050 has reached a fully openposition (FIG. 70). With the clamp assembly 1014 in the open position, auser may insert or replace an accessory. In this regard, once thedesired accessory has been located between the first and second clampmembers 1020 and 1022, respectively, a user can rotate the first clampmember body 1050 in a second opposite direction (clockwise as viewed inFIG. 58). Rotation of the first clamp member body 1050 in the seconddirection will cause the cam pawls 1070 to ride down the respective camramps 1074 to a position that allows an accessory to be clamped betweenthe mounting features 1112 and the clamping surface 1062 of the firstclamp member 1020. Again, the biasing member 1034 will tend tofacilitate and encourage movement of the cam pawls 1070 down the camramps 1074 and into a clamping position.

With reference now to FIGS. 71 and 72, a clamp arrangement constructedin accordance to another example of the present disclosure is shown andgenerally identified at reference numeral 1210. The clamp arrangement1210 can be selectively and alternatively coupled to various power toolssuch as the first or second power tools 412 a and 412 b described above(FIG. 35). The clamp arrangement 1210 generally includes a clampassembly 1214 that may be configured to selectively and alternativelyretain various accessories such as described herein. Unless otherwisedescribed, the clamp assembly 1214 may be constructed similar to theclamp assembly 1014 described above. Therefore, the description andoperation of the clamp assembly 1214 will not be repeated here.

The clamp arrangement 1210 generally includes an attachment plate 1224and a floating adapter plate 1226. As will be described herein, thefloating adapter plate 1226 can be optionally incorporated between theattachment plate 1224 and an identified tool when it is desired torotate the orientation of the clamp assembly 1214 relative to the tool.The attachment plate 1224 can generally include an attachment plate body1230 that provides an attachment plate mating detail 1232. Theattachment plate mating detail 1232 can generally comprise a centralrecess 1234 and a plurality of receiving portions 1238 arrangedtherearound. The central recess 1234 can be further defined by a keyedsidewall 1240 defined into the body 1230. The keyed sidewall 1240 cangenerally be in the form of a twelve point star. The plurality ofreceiving portions 1238 can be generally defined into the body 1230 asoval recesses 1242. The oval recesses 1242 can be configured toselectively receive the protrusions 422 a (FIG. 35) provided on thefirst mating geometry 420 a of the first power tool 412 a.Alternatively, and as will be described below, the oval recesses 1242can be configured to receive protrusions 1250 (FIG. 72) extending fromthe floating adapter plate 1226.

The floating adapter plate 1226 can generally include a floating adapterplate body 1260 that provides an upper mating detail 1262 (FIG. 71) anda lower mating detail 1264 (FIG. 72). The upper mating detail 1262 cangenerally comprise a central recess 1274 and a plurality of receivingportions 1276. In the example provided, the central recess 1274 can begenerally defined by a keyed sidewall 1280 defined into the body 1260.The keyed sidewall 1280 can be generally in the form of a twelve pointstar. The plurality of receiving portions 1276 can be generally definedinto the body 1260 as oval recesses 1282. The lower mating surface 1264includes the protrusions 1250. Of note, when the floating adapter plate1226 is assembled between the adapter plate 1224 and the identifiedpower tool, the protrusions 1250 on the floating adapter plate 1226 arereceived into the receiving portions 1238. The orientation of thereceiving portions 1276 on the floating attachment plate 1226 arerotated relative to the receiving portions 1238 on the attachment plate1224. As a result, the orientation of the clamp member 1214 (and theresulting accessory) can be rotated around a central axis 1290 relativeto the power tool a predetermined amount. In the example provided, thereceiving portions 1238 of the attachment plate 1230 are rotatablyoffset about fifteen degrees relative to the receiving portions 1276 inthe floating adapter plate 1226. Other configurations are contemplated.

With reference now to FIGS. 73 and 74, a clamp arrangement constructedin accordance to another example of the present disclosure is shown andgenerally identified at reference numeral 1310. The clamp arrangement1310 can be selectively and alternatively coupled to various power toolssuch as the first or second power tools 412 a and 412 b described above(FIG. 35). The clamp arrangement 1310 generally includes a clampassembly 1314 that may be configured to selectively and alternativelyretain various accessories such as described herein. Unless otherwisedescribed, the clamp assembly 1314 may be constructed to the clampassembly 1014 described above. Therefore, the description and operationof the clamp assembly 1314 will not be repeated here.

The clamp arrangement 1310 generally includes an attachment plate 1324and a floating adapter plate 1326. As will be described herein, thefloating adapter plate 1326 can be optionally incorporated between theattachment plate 1324 and an identified tool when it is desirable toprovide a different mating detail. The attachment plate 1324 cangenerally include an attachment plate body 1330 that provides anattachment plate mating detail 1332. The attachment plate mating detail1332 can generally comprise an elongated slot 1334 and a pair of femalearcuate slots 1336 formed into the body 1330. In one example, theconfiguration of the mating detail 1332 can cooperatively mate with thefirst mating detail 420 a (FIG. 35) of the first power tool 412 a. Otherconfigurations are contemplated. When it may be desirable to mate withthe second mating geometry 420 b (FIG. 35) of the second power tool 412b, the floating adapter plate 1326 may be positioned between theattachment plate 1324 and the second power tool 412 b.

The floating adapter plate 1326 can generally include a floating adapterplate body 1360 that provides an upper mating detail 1362 (FIG. 73) anda lower mating detail 1364 (FIG. 74). The upper mating detail 1362 cangenerally comprise a central recess 1374 that defines a keyed sidewall1380 defined into the body 1360. The keyed sidewall 1380 can generallybe in the form of a twelve point star. The upper mating detail 1362 canbe configured to selectively mate with the second mating geometry 420 bof the second power tool 412 b (FIG. 35). The lower mating surface 1364includes male arcuate protrusions 1390 that are configured to beselectively received by the female arcuate slots 1336 (FIG. 73) providedin the adapter plate 1324. The interaction of the male arcuateprotrusions 1390 on the floating adapter plate 1326 with the femalearcuate slots 1336 on the adapter 1324 non-rotatably fixes theattachment plate 1324 to the floating adapter plate 1326.

Referring now to FIG. 75, an attachment plate constructed in accordanceto additional features of the present disclosure is shown and generallyidentified at reference numeral 1424. The attachment plate 1424 can beused in place of any of the attachment plates described above. Theattachment plate 1424 can generally include an attachment plate body1440 that provides an attachment plate mating detail 1442. Theattachment plate mating detail 1442 can generally comprise a pluralityof generally pie-shaped protrusions 1444 that cooperate to form acentral recess 1446. Each of the pie-shaped protrusions 1444 includes apair of converging flats 1445. The flats 1445 can be used to engage androtatably fix to a corresponding structure extending from a given powertool. A plurality of grooves 1450 are defined on the attachment platebody 1440 between adjacent pie-shaped protrusions 1444. The protrusions1444, the flats 1445, the central recess 1446 and the grooves 1450 canindividually or in combination interface with various attachment detailsprovided on various power tools such as those disclosed herein.

Referring now to FIG. 76, an attachment plate constructed in accordancewith additional features of the present disclosure is shown andgenerally identified at reference numeral 1456. The attachment plate1456 can be substituted for any of the attachment plates describedabove. The attachment plate 1456 can generally include an attachmentplate body 1458 that provides an attachment plate mating detail 1462 anda central aperture 1474. The attachment plate mating detail 1462 cangenerally comprise a raised annular rim portion 1460 having a pluralityof radially spaced arcuate recesses 1468 a-d formed therein which areseparated by a pair of elongated radially extending grooves 1464 and1466. In the example provided, the grooves 1464 and 1466 extendperpendicular to each other and join a central recess area 1470immediately surrounding the aperture 1474. In this embodiment of theattachment plate 1456 the outer radial ends of the grooves 1464 and 1466are closed and therefore do not extend entirely to the outer peripheryof the attachment plate body 1458. The raised rim 1460, the arcuaterecesses 1468, and the grooves 1464, 1466 can individually or incombination provide a torque transferring interface with variousattachment details provided on various power tools such as thosedisclosed herein.

Referring now to FIG. 77, an attachment plate constructed in accordancewith additional features of the present disclosure is shown andgenerally identified at reference numeral 1550. The attachment plate1550 can be substituted for any of the attachment plates describedabove. The attachment plate 1550 can generally include an attachmentplate body 1540 that provides an attachment plate mating detail 1562similar to the mating detail 1462 of the attachment plate 1456 shown inFIG. 76. In particular, the attachment plate mating detail 1562 cangenerally comprise a raised annular rim portion 1560 having a pluralityof radially spaced arcuate recesses 1568 a-d formed therein which areseparated by a pair of elongated radially extending grooves 1564 and1566. The grooves 1564 and 15666 are arranged perpendicular to eachother and extend from a central recess area 1570 surrounding the centralaperture 1574. In this embodiment of the attachment plate 1550, theradial grooves 1564 and 1566 extend to the outer periphery of theattachment plate body 1540. The raised rim portion 1560, the receivingportions 1568 a-d, and the radial grooves 1564, 1566 can individually orin combination interface with various attachment details provided onvarious power tools such as those disclosed herein.

In this regard, the attachment plate mating detail 1562 (as well as themating detail of the various other attachment plates disclosed herein)is suitable for engaging not only the tool mating details 418 a and 418b (FIG. 35) described above, but other tool mating details provided byother manufacturers including but not limited to Fein, Sears(Craftsman), Rockwell, Dremel, Bosch, Milwaukee, Master Mechanic, andRidgid.

With reference now to FIG. 78, a clamp arrangement constructed inaccordance to another example of the present disclosure is shown andgenerally identified at reference numeral 1610. The clamp arrangement1610 is similar to the clamp arrangement 1010 shown in FIG. 58 andgenerally includes a first clamp member 1620, and a second clamp member1622. The first clamp member 1620 generally includes an outer ribbedgripping surface 1652 for enabling a user to rotate the first clampmember 1620 against the bias of spring 1634 to raise the first clampingmember 1620 relative to the second clamping member 1622 into the openposition shown in FIG. 78. A flange 1660 is provided adjacent the lowerend of the first clamping member 1620 to prevent the user frompotentially pinching his fingers when the clamping arrangement 1610 isclosed.

The second clamp member 1622 can include a plurality of mountingfeatures 1612 extending therefrom. The mounting features 1612 canpreferably be in the form of male tapered conical protrusions configuredand arranged as described above in connection with FIG. 31. By way ofexample, the mounting features 1612 can be configured to engageapertures of the sixth accessory 14 f at a position intermediate theterminal end of the tips and a second clamp surface 1614 on the secondclamp member 1622 such as described above with respect to FIG. 30.

The foregoing description of the embodiments has been provided forpurposes of illustration and description. It is not intended to beexhaustive or to limit the disclosure. Individual elements or featuresof a particular embodiment are generally not limited to that particularembodiment, but, where applicable, are interchangeable and can be usedin a selected embodiment, even if not specifically shown or described.The same may also be varied in many ways. Such variations are not to beregarded as a departure from the disclosure, and all such modificationsare intended to be included within the scope of the disclosure.

What is claimed is:
 1. A power tool configured to hold an accessory soas to be operable by a user of the tool to drive the accessory, thepower tool comprising: a motor; a housing in which the motor iscontained; a spindle mounted in the housing and drivable by the motor;and a clamp assembly arranged at a lower end of the spindle, the clampassembly comprising opposed first and second clamping members betweenwhich a central portion of the spindle assembly extends, said portionbeing able to be received in an open-ended aperture in the accessory,the first clamping member being moveable, in a direction parallel to thespindle axis, from a first position which is such that the clamp assumesa closed condition whereby, when said central portion is so received,the accessory is clamped by the clamping members so as to be fixedlycoupled to the spindle, to a second position which is such that theclamp assumes an open condition permitting the accessory to be moved ina direction transverse to the axis such that the central portion ispassed through the open end of the aperture and the accessory is thusremoved from the power tool; and an actuator operable by the user toeffect the movement of the first clamping member from the first positionto the second position.
 2. The power tool according to claim 1, whereinthe housing includes a forwardly projecting end section in which thespindle extends and which is configured to receive thereagainst the palmof a hand of the user holding the tool such that the index finger of thehand is located at an underside of said end section rearward of theclamp assembly and adjacent thereto.
 3. The power tool according toclaim 1, wherein the spindle oscillates about said axis when driven bythe motor, whereby the accessory likewise oscillates about said axis. 4.The power tool according to claim 1, wherein at least one of the firstand second clamping members includes protrusions at least some of whichare receivable by holes formed in the accessory so as to rotationallylocate the accessory to the clamp assembly.
 5. The power tool accordingto claim 1, wherein the second clamping members is fixed in a directionparallel to the spindle axis.
 6. The power tool according to claim 1,wherein the actuator is rotatable about an axis.
 7. The power toolaccording to claim 6, wherein the axis about which the actuator isrotatable is perpendicular to a longitudinal axis of the motor.
 8. Thepower tool according to claim 1, further including a pivot axle whereinthe actuator is rotatable about the pivot axle.
 9. The power toolaccording to claim 1, wherein the actuator has a longitudinal axissubstantially parallel to a longitudinal axis of the motor.
 10. Thepower tool according to claim 1, wherein the actuator includes anoutwardly facing elongated surface portion which is substantially flat.11. The power tool according to claim 10, wherein the outwardly facingelongated surface portion lies in a plane substantially parallel to alongitudinal axis of the motor at least when the actuator is in a closedposition.
 12. The power tool according to claim 1, wherein the spindleis arranged vertically.
 13. The power tool according to claim 12,wherein the spindle is arranged perpendicularly to a longitudinal axisof the motor.
 14. The power tool according to claim 1, wherein the firstclamping member is disposed above the second clamping member.
 15. Thepower tool according to claim 14, wherein the spindle includes a tophalf portion and a bottom half portion and the clamp assembly is coupledto the spindle at the bottom half portion.
 16. A power tool comprising:a housing; a motor mounted in the housing; an output member driven bythe motor; a spindle coupled to the output member and driven by themotor, through the output member, in an oscillating motion; a clampassembly coupled to the spindle and configured to retain an accessory,the clamp assembly including a first clamp member that moves relative tothe accessory between a closed position wherein the clamp assemblyretains the accessory and an open position permitting removal of theaccessory from the clamp assembly while the first clamp member remainscoupled to the clamp assembly, the clamp assembly further comprising asecond clamp member having a first portion that opposes the first clampmember and cooperates with the first clamp member to clamp the accessorybetween the first and second clamp members; and an actuator operable tocause the first clamp member to move between the closed position and theopen position; wherein the spindle is arranged vertically and the clampassembly is located at a lower end of the spindle.
 17. The power toolaccording to claim 16, wherein the spindle has a longitudinal spindleaxis; wherein the first clamping member is movable in a directionparallel to the spindle axis and the second clamping member is fixed ina direction parallel to the spindle axis; and wherein the first clampingmember is disposed above the second clamping member.
 18. The power toolaccording to claim 16, wherein the spindle includes a top half portionand a bottom half portion, the output member is coupled to the spindleat the top half portion and the clamp assembly is coupled to the spindleat the bottom half portion.
 19. The power tool according to claim 18,wherein the actuator is rotatable about an axis.
 20. A power toolcomprising: a housing; a motor mounted in the housing; an output memberdriven by the motor; a spindle coupled to the output member and drivenby the motor, through the output member, in an oscillating motion; aclamp assembly coupled to the spindle and configured to retain anaccessory, the clamp assembly including a first clamp member that movesrelative to the accessory between a closed position wherein the clampassembly retains the accessory and an open position permitting removalof the accessory from the clamp assembly while the first clamp memberremains coupled to the clamp assembly, the clamp assembly furthercomprising a second clamp member having a first portion that opposes thefirst clamp member and cooperates with the first clamp member to clampthe accessory between the first and second clamp members; and anactuator operable to cause the first clamp member to move between theclosed position and the open position; wherein the spindle is arrangedvertically and perpendicular to a longitudinal axis of the motor and theclamp assembly is located at a lower end of the spindle; and wherein thespindle includes a top half portion and a bottom half portion, theoutput member is coupled to the spindle at the top half portion and theclamp assembly is coupled to the spindle at the bottom half portion.